[Intel-gfx] [PATCH i-g-t] tests: add core_setmaster_vs_auth

[Daniel Vetter]

Tests that master state isn't leaked to new masters by checking
that auth magics for the old master don't work any more.

Based upon a simple test program provided by Thomas.

Cc: Thomas Hellstrom <thellstrom at vmware.com>
Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
---
 tests/.gitignore               |  1 +
 tests/Makefile.sources         |  1 +
 tests/core_setmaster_vs_auth.c | 73 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 75 insertions(+)
 create mode 100644 tests/core_setmaster_vs_auth.c

diff --git a/tests/.gitignore b/tests/.gitignore
index 85936ea45c9f..43d63d3abac9 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -4,6 +4,7 @@ core_getclient
 core_getstats
 core_getversion
 core_prop_blob
+core_setmaster_vs_auth
 drm_auth
 drm_import_export
 drm_read
diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index ff178f7a2df4..b70bca060253 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -102,6 +102,7 @@ TESTS_progs = \
 	core_getstats \
 	core_getversion \
 	core_prop_blob \
+	core_setmaster_vs_auth \
 	drm_auth \
 	drm_import_export \
 	drm_read \
diff --git a/tests/core_setmaster_vs_auth.c b/tests/core_setmaster_vs_auth.c
new file mode 100644
index 000000000000..375b903e2352
--- /dev/null
+++ b/tests/core_setmaster_vs_auth.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright © 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Daniel Vetter <daniel.vetter at ffwll.ch>
+ *
+ * Based upon a test program provided by Thomas Hellstrom <thellstrom at vmware.com>
+ */
+
+/*
+ * Testcase: Check that drop/setMaster correctly transfer master state
+ *
+ * Test approach is only checking auth state (which is part of master state) by
+ * trying to authenticate a client against the wrong master.
+ */
+
+#define _GNU_SOURCE
+#include "igt.h"
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#ifdef __linux__
+# include <sys/syscall.h>
+#else
+# include <pthread.h>
+#endif
+
+igt_main
+{
+	int master1, master2, client;
+	drm_magic_t magic;
+
+	master1 = drm_open_driver(DRIVER_ANY);
+	do_or_die(drmSetMaster(master1));
+
+	/* Get an authentication magic from the first master */
+	client = drm_open_driver(DRIVER_ANY);
+	do_or_die(drmGetMagic(client, &magic));
+
+	/* Open an fd an make it master */
+	master2 = drm_open_driver(DRIVER_ANY);
+	do_or_die(drmDropMaster(master1));
+	do_or_die(drmSetMaster(master2));
+
+	/* auth shouldn't work any more since the master we have the magic from
+	 * isn't the current master any more. */
+	igt_assert_neq(drmAuthMagic(master2, magic), 0);
+	igt_assert_eq(errno, EINVAL);
+
+	close(client);
+	close(master2);
+	close(master1);
+}
-- 
2.1.0